Illustrating the angles subtended at the eye by one lamp and the image of the other as seen in the mirror.
The nature of light and how it is affected by gravity is discussed.
Rheology is an enormously far-reaching branch of physics (or physical chemistry) and has a number of different guises.
Dipak K. Sarker
Could de Broglie's revolutionary idea that an electron in an atomic orbit can behave as a wave have been inspired by a Himalayan singing bowl?